German submarine U-371
Summary of raiding history

Date
Name
Nationality
Tonnage
Fate
12 June 1941
Silverpalm
United Kingdom
6,373
Sunk
24 June 1941
Vigrid
Norway
4,765
Sunk
30 July 1943
Shahristan
United Kingdom
6,935
Sunk
30 July 1943
Sitoebondo
Netherlands
7,049
Sunk
7 January 1943
HMT Jura
Royal Navy
545
Sunk
7 January 1943
Ville de Strasbourg
United Kingdom
7,159
Damaged
23 February 1943
Fintra
United Kingdom
2,089
Sunk
28 February 1943
Daniel Carroll
United States
7,176
Damaged
27 April 1943
Merope
Netherlands
1,162
Sunk
10 July 1943
Gulfprince
United States
6,561
Damaged
10 July 1943
Matthew Maury
United States
7,176
Damaged
7 August 1943
Contractor
United Kingdom
6,004
Sunk
11 October 1943
HMS Hythe
Royal Navy
656
Sunk
13 October 1943
USS Bristol
United States Navy
1,630
Sunk
15 October 1943
James Russell Lowel
United States
7,176
Total loss
17 March 1944
Dempo
Netherlands
17,024
Sunk
17 March 1944
Maiden Creek
United States
6,165
Total loss
3 May 1944
USS Menges
United States Navy
1,200
Damaged
4 May 1944
FFL Sénégalais
Free French Naval Forces
1,300
Damaged

Question: How destructive was U-371 on 17 March 1944?
Answer: On the 17th, German submarine U-371 sank the 17,024 ton Dutch Dempo, and badly damaged the 6,165 ton American Maiden Creek.